3:41
What are Chemical Elements?
18:44
What is Chemistry? 5 Branches of Chemistry
22:09
The Map of Engineering
7:56
6 Chemical Reactions That Changed History
1:22:22
La magia de la química - con Andrew Szydlo
48:03
El escándalo de los químicos eternos | Bloomberg Investigates
17:58
Understanding Metals
1:55:27